This is broken with the latest Mapnik

[robbiet480]

OSM-Solar looks really great! However, it seems it can't be used with the latest mapnik version(s), at least 2.2.0. When trying to use it with Tilestache (using the given tilestache.cfg and changing paths) I get

ERROR:gunicorn.error:Error handling request
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/gunicorn/workers/sync.py", line 126, in handle_request
    respiter = self.wsgi(environ, resp.start_response)
  File "/opt/TileStache/TileStache/Goodies/StatusServer.py", line 214, in __call__
    response = TileStache.WSGITileServer.__call__(self, environ, start_response)
  File "/opt/TileStache/TileStache/__init__.py", line 381, in __call__
    status_code, headers, content = requestHandler2(self.config, path_info, query_string, script_name)
  File "/opt/TileStache/TileStache/__init__.py", line 254, in requestHandler2
    status_code, headers, content = layer.getTileResponse(coord, extension)
  File "/opt/TileStache/TileStache/Core.py", line 425, in getTileResponse
    tile = self.render(coord, format)
  File "/opt/TileStache/TileStache/Core.py", line 506, in render
    tile = provider.renderArea(width, height, srs, xmin, ymin, xmax, ymax, coord.zoom)
  File "/opt/TileStache/TileStache/Mapnik.py", line 133, in renderArea
    self.mapnik = get_mapnikMap(self.mapfile)
  File "/opt/TileStache/TileStache/Mapnik.py", line 422, in get_mapnikMap
    mapnik.load_map(mmap, str(mapfile))
RuntimeError: Failed to parse expression: "name" in rule 'rule 367' in style 'text style 106 (name)' in TextSymbolizer at line 1704 of '/usr/local/share/maps/style/OSM-Solar-master/tile-style.xml'

which someone else was getting in late 2013 and documented in this question.

Trying to manually build the stylesheet with Cascadenik, I get an error:

Traceback (most recent call last):
  File "/usr/local/bin/cascadenik-compile.py", line 100, in <module>
    sys.exit(main(layersfile, outputfile, **options.__dict__))
  File "/usr/local/bin/cascadenik-compile.py", line 33, in main
    cascadenik.load_map(mmap, src_file, dirname(realpath(dest_file)), **load_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cascadenik/__init__.py", line 90, in load_map
    compile(src_file, dirs, verbose, datasources_cfg=datasources_cfg, user_styles=user_styles, scale=scale).to_mapnik(map, dirs)
  File "/usr/local/lib/python2.7/dist-packages/cascadenik/output.py", line 86, in to_mapnik
    lay.datasource = layer.datasource.to_mapnik()
  File "/usr/local/lib/python2.7/dist-packages/cascadenik/output.py", line 155, in to_mapnik
    return mapnik.Datasource(**self.parameters)
  File "/usr/lib/python2.7/dist-packages/mapnik/__init__.py", line 320, in Datasource
    return CreateDatasource(keywords)
RuntimeError: Postgis Plugin: Bad connection
Connection string: 'host=127.0.0.1 dbname=gis user=gis connect_timeout=4'

which someone was talking about more recently, December 2014, on a mailing list. They were told at the time that this was too old to run.

Wondering if there is a way to bring OSM-Solar up to the latest Mapnik standards (and I'm guessing get it onto CartoCSS since Cascadenik looks dead-ish). If not, then I hope this message is found by someone before trying to get this style working in Mapnik, since at this point it seems like it won't work.